AP Physics 2 / Unit 14: Waves, Sound, and Physical Optics
14.1 Properties of Wave Pulses and Waves
Notes
Waves carry energy, not matter.
- Transverse: medium moves perpendicular to the wave (string, light).
- Longitudinal: medium moves parallel (sound).
- Mechanical waves need a medium; electromagnetic waves don't.
Practice
Sound is a:
Compressions and rarefactions.
Waves transfer:
Particles oscillate in place.
Which can travel through a vacuum?
Electromagnetic.
Ready for more? Take the Unit 14 test.